After upgrading to a newer, internally regulated alternator, the engine continues to run after turning off and removing the key. I can only get it to stop by stalling it in gear or pulling the ign (+) wire off the alternator. Coolerman and Rudi have been helping me with this but in an old thread that a lot of people might not be looking at so I thought I'd start a new thread to catch a larger audience.
More details:
My essentially stock '65 had an alternator in it that was overcharging the battery and eventually cooked it. The only electrical mod that I have found is a pertronix ignitor and coil plus a kill switch wired in the "batt" wire to the ignition switch. Other than the bad battery problems (not holding a charge, etc.) it ran and drove fine for the last 3 years. I replaced the voltage regulator and was still getting >17v while running and after replacing the battery.
Because of my winch and adding continued frustration with the VR, I installed a remanufactured internally regulated 55 amp alternator meant for an '85 FJ60. I wired it up as per coolerman's instructions linked above. After this, my voltage was sitting precisely at 14.3v at 1,200-2,000 RPM and I was stoked that my problem was over until I turned off the ignition and the engine kept running and accessories stayed on. Investigation revealed 0.5v or so coming off the ign (+) spade on the alternator and by disconnecting that, the engine stopped. I though it was a bad diode in the alternator and took it back to NAPA for a return.
The same problem happened with the newest alternator only this time, if I pull the ign (+) to test its voltage, the engine dies (like before) but there is no detectible voltage off the terminal.
I can't seem to find this electrical leak that keeps the thing running. I thought the ignition switch might have somehow gone bad in this process but I've tested that. When the engine is still running and the key is off, there are 0v at the "on" terminal. Also, that kill switch on the batt wire doesn't affect this possessed, mind-of-its-own engine.
Has anyone ever run into this or have any ideas about where else I should look?
More details:
My essentially stock '65 had an alternator in it that was overcharging the battery and eventually cooked it. The only electrical mod that I have found is a pertronix ignitor and coil plus a kill switch wired in the "batt" wire to the ignition switch. Other than the bad battery problems (not holding a charge, etc.) it ran and drove fine for the last 3 years. I replaced the voltage regulator and was still getting >17v while running and after replacing the battery.
Because of my winch and adding continued frustration with the VR, I installed a remanufactured internally regulated 55 amp alternator meant for an '85 FJ60. I wired it up as per coolerman's instructions linked above. After this, my voltage was sitting precisely at 14.3v at 1,200-2,000 RPM and I was stoked that my problem was over until I turned off the ignition and the engine kept running and accessories stayed on. Investigation revealed 0.5v or so coming off the ign (+) spade on the alternator and by disconnecting that, the engine stopped. I though it was a bad diode in the alternator and took it back to NAPA for a return.
The same problem happened with the newest alternator only this time, if I pull the ign (+) to test its voltage, the engine dies (like before) but there is no detectible voltage off the terminal.
I can't seem to find this electrical leak that keeps the thing running. I thought the ignition switch might have somehow gone bad in this process but I've tested that. When the engine is still running and the key is off, there are 0v at the "on" terminal. Also, that kill switch on the batt wire doesn't affect this possessed, mind-of-its-own engine.
Has anyone ever run into this or have any ideas about where else I should look?
